<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>Jquery</title>
    <script type="text/javascript" src="js/jquery-1.7.1.min.js"></script>
    <script type="text/javascript">
		$(document).ready(function(){
			move_div();
			
			function move_div(){
				window_width = $(window).width();
				window_height = $(window).height();
				
				obj_width = $('#verycenter').width();
				obj_height = $('#verycenter').height();
				
				$('#verycenter').css('top', (window_height/2) - (obj_height/2)).css('left', (window_width/2)-(obj_width/2));
			}
			
			$(window).resize(function(){
				move_div();
			});
			
		});
	</script>
    <style type="text/css">
		#verycenter {
			height: 150px;
			width: 400px;
			background: #0FC;
			position:absolute;
		}
    </style>
</head>
<body>
    <div id="verycenter"></div>
</body>   
</html>
